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Calculate the estimated CO2 emissions produced each time someone visits your webpage. Based on page size, server location, and green hosting status.
Best for
Use this tool when you need one sharp answer fast before opening a broader report.
The input and results are designed to stay readable and tappable on smaller screens.
This page targets both broad keywords and practical queries people use before they audit a specific domain.
Frequently asked questions
Yes — the Carbon Footprint is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.
Our Carbon Footprint runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.
We estimate CO2 emissions based on page transfer size, server energy source (green hosting), and average grid electricity carbon intensity. Smaller, optimized pages produce less carbon per visit.
An A+ rating means your page produces less than 0.1g CO2 per visit. The average website produces around 0.5g. Anything above 1g is considered high.